```typescript index.ts
// List expenses
const listResponse = brexExpenses.cardExpenses.list({
    expand[]: "\n?expand[]=merchant&expand[]=location\n"
    purchasedAtStart: "\n2023-01-01T23:59:59.999\n"
    purchasedAtEnd: "\n2023-01-10T23:59:59.999\n"
})
```